In conjunction with discussions on atmospheric CO2, timescales, and proxy data, students will make, dissect, and analyze an ice core. The activity allows students to study changes in Earth’s atmospheric composition and temperature on millennial to...(View More) orbital timescales. The lesson includes instructions for making the ice cores (requires up to a week), worksheets, resources and a short assessment.(View Less)

In this hands-on activity, students conduct bottle experiments to learn about the conditions that best facilitate the decomposition of organic material in soil. In the lab, they observe changes in the decomposition of vegetable scraps by varying the...(View More) temperature, moisture and light conditions. This is a learning activity associated with the GLOBE soil investigations and is supported by the Soil chapter of the GLOBE Teacher's Guide.(View Less)